Sayan posted an Question
September 10, 2020 • 01:16 am 30 points
  • IIT JAM
  • Physics (PH)

30the directions along which there is no change in the value of the functionf «,y)=e** at the point (3,-2 are equal to (a) -0.61-0.8j, 0.6 i +0.8j (b) 0.61-0.8,

30The directions along which there is no change in the value of the functionf «,y)=e** at the point (3,-2 are equal to (a) -0.61-0.8j, 0.6 i +0.8j (b) 0.61-0.8, -0.6?+0.8 (c) -0.61-0.8, 0.6 i-0.8j (d) 0.6i+0.8, -0.6i +0.8j JAM GP-2007

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    Somnath Best Answer

    No change occurs in the direction of tangent at that point. To find the tangent find gradient at the given point and take dot product with considered vector and make it zero. See attached file.

    cropped2183165509882277638.jpg
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